CAPTCHA & Bot Protection
50,387 of the 1,000,000 top sites in our Tranco top-1M census run Cloudflare Turnstile (5%). Cloudflare's non-interactive CAPTCHA replacement, bundled free with its CDN/WAF. Detection is homepage-level HTML/header fingerprinting, so a site can run Cloudflare Turnstile on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | x.com | #54 (Tranco) | Find emails |
| 2 | discord.com | #163 (Tranco) | Find emails |
| 3 | flickr.com | #172 (Tranco) | Find emails |
| 4 | soundcloud.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| civicshout.com | #81,730 | Bootstrap, Calendly, Cloudflare + 11 more | Find emails |
| savevid.net | #81,759 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 3 more | Find emails |
| unescwa.org | #81,766 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| peoplefor.org | #81,789 | Bluesky, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| inpost.it | #81,793 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| arautos.org.br | #81,808 | Cloudflare, Cloudflare edge/CDN, Django + 7 more | Find emails |
| mrskin.com | #81,818 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| kgbd88.com | #81,839 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| faperoni.com | #81,840 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| hypb.st | #81,862 | Adobe Fonts, Adobe Fonts (Typekit), Amazon (ACM) + 10 more | Find emails |
| bettywins.com | #81,915 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| jahonline.org | #81,919 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| tryinvision.com | #81,950 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| acbar.org | #81,963 | Bootstrap, Let's Encrypt, LiteSpeed + 3 more | Find emails |
| lobstr.co | #81,969 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| amizone.net | #81,971 | ASP.NET, Azure DNS, Bootstrap + 5 more | Find emails |
| banknote.lv | #81,989 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| bizj.us | #81,998 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| opera.news | #82,032 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| ggxu55.com | #82,045 | Alibaba Cloud CDN, Cloudflare, Cloudflare Bot Management + 5 more | Find emails |
| 24av.net | #82,046 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| cpdl.org | #82,086 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| factafinanceira.com.br | #82,089 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| tctmd.com | #82,106 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| sigma.world | #82,117 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →